Furnace wall



Aug. 11, 1925. 1,548,928

E. BOURBEAU FURNACE WALL Filed Jan. 28, 1925 Patented Aug. il, i925.

nrrnn STATES EDWARD BOURBEA, OF MINNEAPLIS, MINNESOTA.

FURNACE WALL.

Application led January 2B, 1925. Serial No. 5,369.

To all whom t may conce/m.'

Be it known that I, EDWARD BOURBEAU, a citizen of the United States,residing at ll/linneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in FurnacelValls, of which the following is a specification.

This invention relates to furnace walls and the main object is toprovide a composite wall consisting of a permanent masonry outer walland a highly refractory re-placeable inner wall, and means of a noveland practical nature for anchoring the two walls together in a compositestructure, whereby the inner wall may be firmly secured in place andreadily replaced when damaged or burned out by the effect of highten'iperatures which are created in furnaces using walls of this type.Further and more specific objects will be disclosed in the course of thefollowing specifications, references being had to the accompanyingdrawing, in which:

Figure 1 is a perspective view of a wall embodying my invention, saidwall being only partly built up so as to illustrate its entireconstruction.

Figure 2 is a perspective view of one of the lock head blocks forming apart of the outer wall structure.

Figure 3 is a detail sectional view through the wall as seensubstantially on the line 3--3 in Figure 1. l

Figure 4L is a longitudinal sectional elevation through two of the lockhead blocks, about as on the line 411 in Figure 1.

Figure 5 is a detail perspective view of one of the lintel plates usedin the outer wall.

Figure 6 is a detail plan view showing a modification of my inventionwhereby it may be applied to an inside wall of a furnace, which issubjected to intensive heat from both sides and therefore required areplaceable wall on each side of the permanent wall.

Referring to the drawing more particularly and by reference characters 7designates a substructure of tile or brick which serves as a foundationfor and carries the main wall proper. The so-called outer or permanentwall consists of horizontal series of lock head blocks A, pintel platesor tiles B, and various intermediate or filler blocks or tiles C, whichcombine with the blocks A and B to form the outer wall intol a solidcomposite structure except for certain anchorage pockets (later to bedescribed) in which certain members of the inner wall are anchored. Theblocks A are securely connected, at their adjoining ends, by lugs S, atone endof each block, which lock into correspondingly shaped recesses 9,at the opposite ends of the blocks, and each lug 8 has a dependingflange or bead 10, which seats, vertically in a corresponding grooveY 11formed in the receiving recess 9 by an integral sill member 12 of theblock, thus rigidly connecting the blocks and securing them againsttransverse or longitudinal play or movement with respect to each other.

The inner or replaceable wall, which is exposed to the intense heat ofthe furnace, is composed of highly refractory groups of tiles 13, 14 andD-E-F. The tiles `13 are laid in horizontal rows, .and are connected atintervals by the short columns of tile 14 which are preferably crossed,as shown. rllhe intermediate openings formed by the tiles 13 and 14: arefilled or occupied by the anchor blocks D-E-F, which tie the inner andouter walls together. These anchor blocks project with their lock endsinto pockets 15 formed on the blocks A and are supported on baseportions 16 of the blocks, at one end, and upon the tiles 13 at theother end. The blocks E are straight at both ends, but the blocks ortiles D and F are provided at their inner ends with laterally projectingribs 17 which lock into corresponding vertical recesses 18 in thepockets '15. Thus the blocks E act as key blocks to lock the blocks Dand F rigidly in place, and the latter blocks can obviously not beremoved until the key blocks E have first been removed. The pintelplates B are provided in their under surfaces with wedge shaped openings19, directly over the blocks D-E-F. so

that the key block E may be pried up ,(see

Figure 3) and loosened so as to be readily removed. In the event thatthere should be any great resistance to the withdrawal of the block E itmay be forced out by a rod or pin inserted in a hole 20, back of theblock, so that it may be forced out. After the block E has been removed,the adjoining blocks F and D can also, of course, be easily removed andreplaced.

ln the partition wall, shown in Figure 6,

the general construction and application of the invention is the same asshown in Figure l, except that two outer replaceable walls Gr and H arebuilt up and anchored to the central wall I. The permanent wall lcorresponds to the outer wall, in Figure l, and the lock head blocks A1are provided with pockets on both sides for the reception of the anchorblocks D-EF of both replaceable walls Gr and H.

It is understood that various modihcations may be made in the generaldetails of the invention as herein illustrated and described, providing,however, that such modifications come within the spirit and scope of theappended claims. Having now therefore, fully shown and described myinvention, what l claim to be new and desire to protect by LettersPatent is z- 1. wall structure having a permanent wall and a replaceablewall, said outer wall including a horizontal series of adjoininginterlocked lock head blocks, a pair of anchor tiles extending into eachloclr head block from the other wall and forming a part of said otherwall, and a removable key tile arranged between said anchor tiles ofeach pair to lock them rigidly with respect to the lock head blocks intowhich they extend.

2, A wall structure comprising a permanent wall having anchorage pocketsthere in, and a replaceable wall having anchor tiles projectingtherefrom and into said pockets, said anchorage tiles having lateralprojections: for locking engagement in said pockets, a hey tile adaptedto be inserted between two ont said anchor tiles to hold them in lockedpositions, the portion of the outer wall immediately above said key tileha ving a recess whereby the key tile may be pried up to loosen it fromits normal locking position.

3. A wall structure comprising a permanent wall and a replaceable wall,said permanent wall having horizontal rows oif adjoining blocks havingpockets with lateral recesses, said replaceable wall having pairs ofanchor tiles extending into said pockets, each oi' said tiles having'ribs for engagement in said recesses, and a key tile inserted betweenthe anchor tiles oli each pair 'l'or securing such anchor tiles inlocked positions in said pockets.

4. A wall structure having a permanent outer wall and a replaceablewall, said outer wall comprising a series of lock head blocks havingpockets, anchor blocks secured in said pockets and extending` into thereplaceable wall, each ot said lock head blocks haring a lug in one endand a recess in the other end for receiving the lug et the adj a centloch head block whereby the lock head blocks may be identically formedand locked together.

5. wall structure having a permanent outer wall and a replaceable wall,said outer wall con'iprising a series ot locl: head blocks having'pockets, anchor blocks secured in said pockets and extending into thereplaceable wall, each oi said loch head blocks having a lug` in one endand a recess in the other end 'lior receiving the lug of the adjacentlock head block, the lug oif each block having a projecting Harige, andthe recess of each block having a flange receiving groove, whereby thebloc-lis may be interlocked end to end and to prevent spreading of theblocks from each other.

ln testimony whereoil l aliix my signature.

EDVVABD BOURBEAU.

